ATtiny861 Automotive Atmel Corporation, ATtiny861 Automotive Datasheet - Page 106
ATtiny861 Automotive
Manufacturer Part Number
ATtiny861 Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
2.ATTINY261_AUTOMOTIVE.pdf
(11 pages)
3.ATTINY261_AUTOMOTIVE.pdf
(16 pages)
4.ATTINY261_AUTOMOTIVE.pdf
(226 pages)
Specifications of ATtiny861 Automotive
Flash (kbytes)
8 Kbytes
Pin Count
20
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
8
Hardware Qtouch Acquisition
No
Max I/o Pins
16
Ext Interrupts
16
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
0.5
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 150
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
No
Calibrated Rc Oscillator
Yes
- AT90CAN128_AUTOMOTIVE PDF datasheet
- ATTINY261_AUTOMOTIVE PDF datasheet #2
- ATTINY261_AUTOMOTIVE PDF datasheet #3
- ATTINY261_AUTOMOTIVE PDF datasheet #4
- Current page: 106 of 226
- Download datasheet (5Mb)
106
ATtiny261/ATtiny461/ATtiny861
Figure 16-12. Phase and Frequency Correct PWM Mode, Timing Diagram
The Timer/Counter Overflow Flag (TOV1) is set each time the counter reaches BOTTOM. The
Interrupt Flag can be used to generate an interrupt each time the counter reaches the BOTTOM
value.
In the Phase and Frequency Correct PWM mode, the compare unit allows generation of PWM
waveforms on the OC1x pins. Setting the COM1x1:0 bits to two will produce a non-inverted
PWM and setting the COM1x1:0 to three will produce an inverted PWM output. Setting the
COM1A1:0 bits to one will enable complementary Compare Output mode and produce both the
non-inverted (OC1x) and inverted output (OC1x). The actual values will only be visible on the
port pin if the data direction for the port pin is set as output. The PWM waveform is generated by
clearing (or setting) the Waveform Output (OCW1x) at the Compare Match between OCR1x and
TCNT1 when the counter increments, and setting (or clearing) the Waveform Output at Compare
Match when the counter decrements. The PWM frequency for the output when using the Phase
and Frequency Correct PWM can be calculated by the following equation:
The N variable represents the number of steps in dual-slope operation. The value of N equals to
the TOP value.
The extreme values for the OCR1C Register represent special cases when generating a PWM
waveform output in the Phase and Frequency Correct PWM mode. If the OCR1C is set equal to
BOTTOM, the output will be continuously low and if set equal to MAX the output will be continu-
ously high for non-inverted PWM mode. For inverted PWM the output will have the opposite
logic values.
The general I/O port function is overridden by the Output Compare value (OC1x / OC1x) from
the Dead Time Generator, if either of the COM1x1:0 bits are set and the Data Direction Register
bits for the OC1X and OC1X pins are set as an output. If the COM1x1:0 bits are cleared, the
actual value from the port register will be visible on the port pin. The configurations of the Output
Compare Pins are described in
TCNTn
OCWnx
(COMnx = 2)
OCWnx
(COMnx = 3)
Period
1
Table
f
OCnxPCPWM
16-4.
2
=
f
------------ -
clkT1
N
3
OCnx Interrupt Flag Set
OCRnx Update
TOVn Interrupt Flag Set
7753F–AVR–01/11
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